| 摘要 |
<p>PURPOSE:To perform a clock switching without noise, by switching the first clock, and the second clock, by the second change point detection signal obtained from the first change point detection signal, and the second clock, after obtaining the first change point detection signal from the first clock, and a clock switching signal. CONSTITUTION:The titled circuit is formed by a change point de tecting means 6 which obtains the second change point detection signal by detecting the change point of the second clock from the first change point detection signal, and the second clock, after obtaining the first change point detection signal by detecting the change point of the first clock from the first clock, and the clock switching signal out of inputted first clock, second clock, and clock switching signal, and a switching means 5 which switches the first clock, and the second clock by the second change point detection signal from the change point detecting means. And by driving the switching means 5 by the second change point detection signal, and switching the first clock, and the second clock, the clock switching without noise can be performed.</p> |
